478860462721 has 16 divisors (see below), whose sum is σ = 537305484240. Its totient is φ = 424537630720.

The previous prime is 478860462719. The next prime is 478860462749. The reversal of 478860462721 is 127264068874.

It can be written as a sum of positive squares in 8 ways, for example, as 494573121 + 478365889600 = 22239^2 + 691640^2 .

It is a cyclic number.

It is not a de Polignac number, because 478860462721 - 2¹ = 478860462719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478860462761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11825146 + ... + 11865571.

It is an arithmetic number, because the mean of its divisors is an integer number (33581592765).

Almost surely, 2^478860462721 is an apocalyptic number.

478860462721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

478860462721 is a deficient number, since it is larger than the sum of its proper divisors (58445021519).

478860462721 is a wasteful number, since it uses less digits than its factorization.

478860462721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23690804.

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 478860462721 in words is "four hundred seventy-eight billion, eight hundred sixty million, four hundred sixty-two thousand, seven hundred twenty-one".